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The parallel resistors also reduce power dissipation in the pot. Without them the pot will get quite warm, reducing its life.

Besides that: (without parallel resistors), if the wiper arm of the pot goes open-circuit the circuit doesn't just go out of spec....it DIES.? This is probably not as uncommon a failure as you'd

Hello Jay Andrew Ikin closed his business down and retired in April 2023. Unfortunately he passed away aged 78 in October 2023 just weeks away from his 79th birthday and only six months after

Looks like you were promoted to "Owner" in more than one of Steve's groups. Andy

Yes, that does mean the group's original Owner (Steve Greenfield) has selected you as one of the group's Owners.? An Owner is like a super-Moderator.? You have the power to create and destroy. You

I hope I'm not puttng my foot in my mouth but I didn't realize Andy had passed away...I thought he simply retired. Jay

It may be as simple as a 100Ω pot was more available than a 50Ω pot. Also the adjustment will be less touchy, easier to set. Mikek

If you want to protect the loop against static atmospheric voltages to earth, you need to connect the diodes to ground. Ground means real ground/earth, not GND/minus of the amplifier. regards Fred

Hi everyone As the owner of an ageing ALA1530LN since Wellbrook ceased trading I have been trying to find a replacement amp unit before mine finally succumbs to the wet & windy English weather. With

Doesn't using ExpressPCB lock you into using their manufacturing service, at least for the first order? Thanks, Craig

Ill bore you with the physical exam yesterday. The physical therapist met us at the orthopedist's office with the surgeon and 2 x-ray techs. I thought I knew what torture was, I've now had a post

Hi everyone I just wanted to thank members for their schematic/PCB design suggestions, I am getting reasonably good results using ExpressPCB and will post the results once finished. Thanks Chris

Hi Told you Chris would be helpful Simon Hope op goes well!

The Multi-function Tester (TC-V2.12k) is good for identifying parts, testing to see if they are good, but the transistor and JFET matching function uses too little gate current for most useful

I got this one; https://www.ebay.com/itm/285523623993?var=587474074108 No case but uses a real Atmel Chip. I use it all the time. When salvaging parts from old equipment no need to identify just plug

SprintLayout6.0 Easy to use and learn. https://www.electronic-software-shop.com/lng/en/electronic-software/sprint-layout-60.html?language=en Sam Reaves ARS W3OHM Owner / Moderator of: LeCroy

I think Ethernet has great promise because of the tight twist. I did some ingress tests at a site roughly in the center of a triangle of all the Lexington MW stations and Ethernet was almost as good

In all honesty i suspect Chris will be happy to talk with you especially as you are using one of his Ethernet early models..all his now are coax due to people being scared of Ethernet/ demand. Simon

I'll risk it later today. I have to go in for detailed X-rays so they can pick the best fitting replacement joint. It sounds horrible but my right knee is so much better words fail me. A local civil

Chris is quite reasonable, ask..even if just get response its made of xyz plastic. Also the fact that his product is still as good as new is a positive remark on said group. Simon